According to this study, researchers described about the S-point and report cases of severe epistaxis originating from it. As the introduction of nasal endoscopy into the field of Otorhinolaryngology, the treatment paradigm for cases of severe epistaxis has shifted toward early and precise identification of the bleeding site.

Although severe epistaxis is usually considered to arise from posterior bleeding, an arterial vascular pedicle in the superior portion of the nasal septum, around the middle turbinate axilla projection, frequently has been observed. That vascular pedicle was named the S-point. Epistaxis is one of the most common emergencies in otorhinolaryngology practice.

It is extremely common in the general population; however, it is estimated that only 10% of affected individuals seek medical care, because it is usually benign and self-limited.Severe epistaxis, that is potentially life-threatening and requires immediate and urgent treatment, is less common, but its occurrence in specialized Otorhinolaryngology services can comprise up to 4% of the cases.

The surgical treatment of severe epistaxis has evolved from heroic measures, such as external carotid artery ligation, to procedures that increasingly value the accurate identification and control of the bleeding point. Endoscopic cauterization of the sphenopalatine artery is currently the most commonly performed surgical procedure in the treatment of severe epistaxis, and the use of endoscopes has allowed the surgical technique refinement to increase procedural efficacy.

The popularization of nasal endoscopy has encouraged the active search for the bleeding point, previously restricted to the Kiesselbach's plexus, now with the possibility of identifying posterior bleeding points in the nasal cavity. Therefore, nasal endoscopy has resulted in an important change in paradigm regarding the treatment of severe epistaxis.

There is much controversy about the location of severe bleeding cases, perhaps due to the lack of standardization in their search. Authors identified the lateral nasal wall as the main site of bleeding, with the upper nasal septum accounting for only 16.3% of the cases. 

They identified the nasal septum as the main site of severe posterior bleeding (46.6%); however, their study only identified an anterior or posterior location of bleeding, and did not report whether the bleeding was superior. One factor is crucial: without using the endoscope, the bleeding point might not be in half of the cases.

The S-point was informed as the source of bleeding in severe epistaxis. Nine cases of severe epistaxis with their respective origin and their effective treatment only with electrical cauterization of the S-point were reported. The dissemination of S-point knowledge as one cause of severe bleeding may increase the success of surgical treatment of epistaxis and decrease its morbidity.